Roller-bearing.



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1,131,612, Patented Ma119,1915.

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SEBASTIAN ZIANI DE FEBRANTI, OF BASI'OW, ENGLAND,

ROLLER-BEARING.

Specification of Letters Patent.

Patented Mar.. 9, 1915..

Application led October 6, 1914. Serial No. 865,368.

To all whom it may concern Be it known that I, SEBASTIAN ZIANI DnFERRANTI, a subject of the King of Great Britain and Ireland, andresiding at Baslow, in the county of Derby, England, have inventedcertain new and useful Improvements in and Relating to Rolleiearings, ofwhich the following is a specification.

The invention relates to roller bearings and especially to theconstruction of the rollers themselves.

In order to overcome certain difficulties in the working of rollerbearings, believed to be due to abrasion or other effect caused by theaction of steel on steel under concentrated loads, it has been proposedto construct the rollers of other materials of a non-metallic characterand it is the object of the present invention to provide a form ofroller specially suitable for such materials, but applicable withadvantage in certain cases to steel also.

lVith this object the invention consists of a roller for the purposeindicated constructed of a number of laminae or thin plates of ametallic or non-metallic material held together axially under consider'-able pressure by appropriate means.

The invention also consists of a roller as set forth in the precedingparagraph, in which the laminae are formed of a material composed ofliber as a basis.

The invention further consists of the rollers and roller bearingshereinafter described or indicated.

Referring to the accompanying drawings which are to some extentdiagrammatic Figure 1 shows an elevation of a cylindrical roller, whileFig. 2 shows a similar View of a conical roller.

In carrying the invention into effect according to one form as shown inFig. 1, a central spindle, a, running through the roller is screwed atboth ends for the reception of the pressure nuts. b, b. On the spindle,a, are threaded a large number of laminze, c, c, pressed togetheraxially by the nuts, b, it may be in conjunction with washers, d, CZ.

Referring to Fig. 2, which shows a form of conical roller, the spindle,a, at one end has formed integrally with it a heavy disk or plate, e,against which the laminae, c, are

forced by the nut, b. The spindle, a, is preferably cylindrical so thatall the central holes through the laminae are the same diameter.

The laminae should fit neatly on the spindle and after being secured inplace may be ground or otherwise finished to the exact size required.The washers and nuts should be proportioned so as to be slightly withinthe effective surface of the laminated portion of the roller, while ifdesired the nuts may be hexagonal in the first place and subsequently bereduced to the conical forms indicated in the drawings.

As regards material, the laminae may be made of hardened steel or ofmore or less homogeneous non-metallic substances such as leather or rawhide; or again substances with a definite fibrous structure such as woodveneer may be used in which case it is preferable thatl the fibers inadjacent laminae should cross one another at an angle. Similarly wovenfabric may be used or material having liber as a basis but with a lessdefinite structure such as felted material or paper in its many formsincluding parchmentized paper and especially Manila paer. p In somecases the laminae may be of different materials interleaved, but ingeneral I believe the best results are to be obtained by fibrousmaterials in which a proportion of the fibers at any rate are arrangedat right angles to the surface of the roller.

Having now described my invention what I claim as new and desire tosecure by Letters Patent is A roller for roller bearings comprising incombination a spindle, a plurality of laminae each provided with acentral aperture, said laminae being held on the spindle in juxtaposedrelation to one another, retaining means on each end of said spindlebearing against the outer laminas, one of said retaining means beingadjustable axially of said spindle.

In testimony whereof, I affix my signature in presence of two witnesses.

SEBASTIAN ZIANI DE FERRANTI.

Witnesses:

ALBERT HALL, ViLLiAM GEORGE TUCKER.

Copies of this patent may be obtained for ve cents each, by Yaddressingthe Commissioner of Eatents,

Washington, D. C.

